<header class="navbar navbar-fixed-top navbar-inverse">
  <div class="container">
    <%= link_to "sample app", root_path , id: "logo" %>
    <nav>
      <ul class="nav navbar-nav navbar-right">
        <li><%= link_to "Home", root_path %></li>
          <li><%= link_to "Help", help_path %></li>
            <li><%= link_to "Log in", "#" %></li>
          </ul>
        </nav>
      </div>
    </header>
